package a_collection.collection.list_demo;

/**
 * description:
 * author: xiaoxu
 * createTime: 2018-11-21 16:34
 **/
public abstract class AbstractMyArrayList {

    //跟具传入的元素，删除元素
    public abstract boolean remove(Object o);

    //返回列表元素的下标
    public abstract int indexOf(Object o);

    //列表中是否包含该元素
    public abstract boolean contains(Object o);
}
